总是报错,应该如何改<select id="Select1" multiple="multiple" name="Select1" style="width: 87px; height: 88px" runat="server">
<option selected="selected" value="username">帐号</option>
<option value="forbid">是否禁用</option>
<option value="chinesename">姓名</option>
</select>
<option selected="selected" value="username">帐号</option>
<option value="forbid">是否禁用</option>
<option value="chinesename">姓名</option>
</select>
<select name="Select1" id="Select1" multiple="true" size="15" style="width:400px" runat="server"></select>